Motor-vehicle.



Patented Aug. 5, I902.

L IL A c C M M H moron vamcn.

2 Sheets Sheet I.

(No mum.)

UNITED STATES P T NT OFFICE.

HARRY M. MOCALL, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF FIVE- EIGHTHSTO JAMES REES'SONSK COMPANY, OF PITTSBURG, PENNSYL- VANIA. i

MOTOR-VEHICLE.

SPECIFICATION forming part of Letters Patent No. 706,439, dated 'August5, 1902. Application filed March 7, 1902. Serial No. 97,077. (No model.)

To all whom, it may concern:

Be it known thatI, HARRY M. MCOALL, a citizen of the United States,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inMotor-Vehicles,

of which the following is a specification, reference being had to theaccompanying drawings. v

This invention has relation to automobiles; and it consists in thenovelconstruction and arrangement of its scribed.

The object of this invention is to provide an automobile with a simpleand effective View of an automobile provided with my im-.

provement, showing one traction-wheel in section. Fig. 3 is aperspective view of the motor-shaft and its attachments. Big. 4 is adetailed side view of one of the pivoted arms for guiding themotor-shaft, showing a slid-' located in the lower end-of ingjournal-box said arm. a

Each of the traction-wheels 1 is providedon its inner face with anannular flange2, said flange being concentrically arranged upon the saidtraction-wheel. The inner face of said flange 2 is provided with anannular inwardlyextending projection 3, forming a track. Themotor-shaft-support arms 4 4 are journaled at their upper ends totheaxle 5 of the traction-wheels 1, said arms 4 l having journaled'intheir lower ends the motor-shaft 6. The motor-shaft 6 passestransversely through the boxes 7, an ordinary ball-bearing beingprovided between the said shaft and the said boxes. The boxes 7 areslidably parts, as hereinafterdemounted in the elongated openings 8 atthe lower ends of the said arm, as shown in de tail in Fig. 4. Usingthe-said arms 1 4 as a radius, the motor-shaft 6 and its attachments areadapted to make a partial rotation about thetraction-wheel'axle 5, asindicated by the dotted lines'inFig. 1.

I The armature 9 of the motor is fixed to the motor-shaft 6,;While thefield 10 of the said motor. is supported bythe said shaft 6, the saidfieldlO being held against rotation by means of lugs 11, the] upper endsof which pass up and enter the semicircle guides 12,

whichare attached to the body ofthe vehicle. The semicircle guides 12 12are concentrically arranged with-relation to the axle 5.

tor-shaft and its attachments tothe front or to the rear, as occasionmay'require. For moving the motor-shaft and its attachments a lever 15is provided, said lever being suitably fulcrumed at its lower end-to theframework of the vehicle, being connected by means of a rod 16 with oneofthearms 4. It will be seen'that when the upper end of the lever-15 ismoved by the operator, toward the dashboard of the vehicle the rod '16w'ill'be drawnlforward. The motor-shaft 6 and its attachments willbedrawn in front of the center ofthetraction-wheels 1. Thus the entireweight of the motor-shaft 6 and its attachments will be applied to theinner face of the flanges 2 in front of the center of thetraction-Wheels 1. By reversing the operation of the lever abovedescribed the motorshaft 6 and its attachments may be carried behind thecenter of the traction-wheels 1. The advantage of this adj ustmentof theweight of the motor-shaft and its attachments is that when the vehicleis moving forward the weight of the parts above mentioned may betransferred to the front of the center of the traction-Wheels, and thusthe said weight The entire weight of the motor-' is utilized inassisting in revolving the said traction -wheels on substantially thesame principle that the application of a weight in a treadmill on eitherside of the center of the wheel causes the wheel to revolve in thatdirection. When the vehicle is backing, the motor-shaft and itsattachments are thrown behind the center of the traction-wheels with thesame effect as above set forth. When the vehicle is traveling on levelground, the motor-shaft and its attachments may be substantially alinedwith the perpendicular central axis of the traction-wheel, if theoperator finds it advantageous to do so. motion is transmitted to thetraction-wheels by means of the revolving armature 9, causing the shaft6 to revolve, which in turn causes the disks 14 to revolve. The saiddisks hearing upon the track 3 causes said track 3 and thetraction-wheels to revolve in the same direction that the disk 14 isrevolved in.

I Having described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A motor-vehicle consisting of a tractionwheel having atrackconcentrically located thereon, a motor-shaft having a disk adaptedto engage said track, and a suitable guide for be moved in the arc of acircle about the center of the traction-wheel, a means for operating theguide, a motor mounted on said shaft, the weight of the motor, the shaftand their attachments being borne by the said track.

2. A motor-vehicle consisting of atractionwheel, a track concentricallyarranged upon said traction-wheel, a motor having its armature fixed toa motor-shaft, said motor-shaft having at its end a disk adapted toengage said track, a guide adapted to move said shaft and itsattachments in the arc of a circle, a means for supporting the field ofthe motor and hold it against revolution, but permit it to rotate in thearc of a circle and a .means for operating the 7 guide.

3. A motor-vehicle consisting of a tractionwheel, a track concentricallyarranged on The rotary said traction-wheel, a motor consisting of anarmature and. a field, a support for said field adapted to retain itagainst revolution, but permit it'to rotate in the arc of a circle, amotor-shaft fixed to said armature, a disk carried by said motor-shaftand adapted to engage said track, a guide adapted to'move said shaft andits attachments in the arc of a circle, and a means for operating saidguide.

4. A motor-vehicle consisting of a tractionwheel, a track concentricallyarranged upon said traction-wheel, a motor-shaft, a disk arranged onsaid shaft and adapted to engage said track a guide adapted to rotatesaid shaft in the arc of a circle, said guide having at its lower end anelongated opening receiving said motor-shaft and a means for operatingthe motor-shaft and said guide.

5. A motor-vehicle consisting of a tractio nwheel, a trackconcentrically arranged upon said traction-wheel, a motor-shaft adaptedto rotate in the arc of a circle, a disk attached to said shaft andadapted to engage said track, a guide having an elongated opening, asliding box carried by said opening, said motor-shaft being journaled insaid box, and a means for operating the motor-shaft and the guide.

6. A motor-vehicle consisting of a tractionwheel, a track concentricallyarranged upon said wheel, a motor consisting of an armature and a field,a motor-shaft fixed to said armature, a disk carried by saidmotor-shaft, said disk adapted to engage said track, a guide adapted tomove said motor-shaft and its attachments in the arc of a circle, ameans for operating said guide, guides for the motorfield, said guidesbeing so constructed, ar-

ranged and connected with the motor-field whereby the same is held fromrotation, but permitted to move in the arc of a circle.

In testimony whereof I affix my signature in the presence of twowitnesses.

HARRY M. MCOALL. Witnesses:

MARY L. MILLARD, ANNA ELIZABETH STULL.

